Shade roller



vApril 23, 1929. y N, NAMAN 1,710,065 I I SHADE ROLLER Filed April 2, 1926 til Patented Apr. 23, 1929.

g tintes PATENT OFFICE.

NATHAN NAMAN, oF NEW YORK, N. Y., AssIGNon 0E onE-HALF To PHILIP MoNxA.

e SHADE ROLLER.

Application Afiled April 2,l 1926.r Serial No; 99,231.

This invention relates to improvements in shade rollers.

One of the objects of this inventionis to enable a shade roller ot the spring-actuated type to be stopped and started more positively and accurately.

Another object of the invention is to provide in a shade roller, a pawl and ratchet device which, while providing a secure and positive automatic locking during unwinding movement et the shade so that a mere stopping oit such unwindin g movementy will cause a retention of the shade in the position to which it is moved and at which manual pressure is released, will, furthermore, provide for a ready release 0i the lockingengagement of the pawl tof` permit a winding movement of the shade by the spring.`

Another object of the invention is lcoprevide locking means which will compensate 'for disalignment or improper mounting of the operating spindle either through wear or play in the mounting slot of the bracket or through itailure to position the bracket in proper positi on on the window'frame.

With these and other objects in view, the invention comprises the combination kof members and arrangement oi parts so combined as to co-act and cooperate with each other in l the performance et the functions and the accomplishn'ient of the results herein contemplated, and comprises in one of its adaptations the species or preferred form illustrated. in the accompanying drawings,'in which Fig. 1 is a vertical section, partly in elevation, of a shade roller embodying my yinvention;

Fig. 2 is an end elevation of the shade roller shown in Fig. 1;

Fig. 3 is a section on the line 3 3 ot' Fig. 1 looking in the direction et the arrow; and

Fig. 4 is a perspective view ot the operat` ing section oi the shaft or spindle.

Referring now to these drawings which il lustrate a preferred embodiment of my invention, 1 indicates a shade roller which is of the conventional type and is provided with a spindle 2 surrounded by a spiral spring 3 anchored to the roller and spindle in the usual way. As shown, the spindle or shaft 2 has a metallic section 4i provided with a bearing collar 4a adapted to iit within a bearing 5l in a metal cap 5 at the end of the shade roller and also having a ratchet wheel 6 and a squared mountingy end 7 which is adapted to lit within a slot 8 in a bracket 9 yconnected to a wall 10 by nails 11.

Itis desirable, in mounting ashade roller,

.to use'one-piecebrackets ot the type shown in whichl the'mounting slot 8a extends at an in- 60 ehnation trom the vertical axis of the bracket and the upper end 12 thereof communicates with a side entrance opening 13 so as to enable a ready insertion or' the squared 1nount- :ing part 7 through the said entrance open- 65 ing 13. It is intended that brackets 9 of this type be placed on the windowy frame at a slight inclination so as to cause the slot 8# and the squared operating end to be positioned vertically. As these brackets, however', are 70 yattached to the Walls by unskilled persons, the brackets 9 are often placed in vertical position and the slots 8 are, therefore, inclinedV to the vertical. This disalignment usually ycauses considerable trouble in the operation of the conventional shade roller, which is provided with a ratchet wheel having only two oppositely-arranged notches which in order to permit one of the gravity pawls tofall into the same, must be arranged in a vertical so plane substantially passing through the axis of the ratchet Wheel, it being desirablev to have a free space between theseoppositely-arranged notches in order to enable ready re` lease of the pawl when it is desired to permit upward spring-actuated windingmovement of the shade. It is, therefore, inadvisable to use a pawl with a. series of teeth sur? rounding the entire circumference, because in such event, the pawl keeps dropping in be 90 tween the teeth and prevents ready release forupward oiwvintling movement of the shade.

By the use oit.' my invention, I am enabled.` however, not only to provide the free inter-r notch space necessary tor the positive release of the pawl to procure a goed winding movement but am also enabled te procure a more positive automatic stopping of the roller at any point and to compensate for any disalignment from the vertical of the operating or mounting part of the spindle, the position of which with relation to the vertical, will determine rthe position yat which the g avity pawl will contact the ratchet Wheel. In order to accomplish this, I preferably provide two pairs of notches 14, 14* and 15, 15 on the ratchet wheel, one pair at each end of the squared mounting portion of the spindle, one member oi each pair extending on oppo- 11o msm..

site sides of thekvertical axis of said operating Vend or of vertical position in which the gravit-y pawl moves, Vthus enabling a dropping ot' the pawl into one of such notchesA extend to 'one side and the other member to Vthe opposite side ot' a vertical pla-ne passing; vthrough the axis ot' the ratchet Wheel and that inview of this arrangement, one ofV the pa-Svls,r `when the movement ot' the shade roller is stopped or slowed up, will drop 'in a substantially vertical-direction and into contact with the ratchet Wheel. Vhen ay pair of Y notchesarev so disposed the pa-Wl will drop into one of theseV notches. The placing;- of the notches inl this position WilL therefore, compensate for any disalignment from e vertical plane of the squared mounting end of the stationery siindle and. furthermore the arcuate, unbroken surfaces 6a, 6", on oppositesides ot' these notchesy will enable the full disengagement ofthe pawl in order to get a Yproper start for 'the springactuated yWinding-up movement of the roller.

with the usual cylindrical stub spindle 18 which is mounted in a bracket 19 attached to the wall 20. Y f

Having described my invention, I claim l. A shade roller-provided Wit-h a station- Vcuiniierenee,V the members l axis ot' said squared inonn The opposite end ot the roller is provided' spiral spring arranged and spindle to cause a. Winding movement ot the roller, a gravity Ypar-vl pivet-aliy mounted Von one end oic the roller7 a 'ratchet wneel ined on the spindle ary spindie and a between said relier and provided in its cireun'iference with a pair l* adjacent to each Nec ion of said cirn which pair extend to kcopiV ite sides of a ve irai-plane passing, through the axis et said Wheel, said Wlieei having arcuate unbroken cire ni'erentiai surfaces on opposite sid said notches.Y

2. fr shade roller pi ed With a stationary spindle and a spir igarranged between said roller a lie cause a Winding in 1 't ix said spindle being` provided with y a end il hf L of notches arranged other Within a quadri.

ot'said squared mi notches'7 the members of each pair being, errang d ciosely adjacent to each other Within a quadrant section circumference of said A.vneel 1nd ha. gr bet-Ween the pairsl areuate unbroken eiieuniiferei surfaces, and said members ont a pair b arranged on opposite sie/es of the vertice gravity pawl mounted on the end of said roller. l

rn Witness whereof, have signed my name to thev foregoing' speciication. 

